Answer in brief
CVE-2022-25881 records a High severity (CVSS 7.5) vulnerability in http-cache-semantics vulnerable to Regular Expression Denial of Service. The current sources do not mark it as known exploited. The current feed maps org.webjars.npm:http-cache-semantics (maven), http-cache-semantics (npm). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps org.webjars.npm:http-cache-semantics (maven), http-cache-semantics (npm). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| org.webjars.npm:http-cache-semanticsmaven | >=0 <4.1.1 | 4.1.1 |
| http-cache-semanticsnpm | >=0 <4.1.1 | 4.1.1 |
Published upstream
Jan 31, 2023
Evidence: source:osv:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:osv:source_dates:source-dates:recordFirst seen by HOL
Sep 10, 2026
http-cache semantics contains an Inefficient Regular Expression Complexity , leading to Denial of Service. This affects versions of the package http-cache-semantics before 4.1.1. The issue can be exploited via malicious request header values sent to a server, when that server reads the cache policy from the request using this library.
Quoted source text, attributed separately from HOL analysis.